#3729BF#3729BF

#3729BF is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 41.8% C 0.218 H 275.5°. Best body text is #FFFFFF at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#3729BF
RGB	rgb(55, 41, 191)
HSL	hsl(246, 65%, 45%)
HSV	hsv(246, 79%, 75%)
CMYK	cmyk(71.2%, 78.5%, 0%, 25.1%)
CIE-LAB	lab(29.81, 51.76, -75.16)
CIE-LCH	lch(29.81, 91.26, 304.55°)
OKLab	oklab(41.77% 0.0208 -0.2173)
OKLCH	oklch(41.77% 0.218 275.5)
XYZ	xyz(11.7694, 6.1586, 49.8486)
Luminance	0.0616 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729BF #B1BF29

analogous

#2966BF #3729BF #8229BF

triadic

#3729BF #BF3729 #29BF37

tetradic

#3729BF #BF2966 #B1BF29 #29BF82

square

#3729BF #BF2966 #B1BF29 #29BF82

split-complementary

#3729BF #BF8229 #66BF29

monochromatic

#1A135A #281E8D #3729BF #5A4DD9 #887FE4

Accessibility & contrast

On white

9.41

#3729BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#3729BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729BF

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729BF	#FFFFFF	#000000	##FFFFFF
##3729BF	1.00	9.41	2.23	9.41
#FFFFFF	9.41	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DC3

Deuteranopia (green-blind)

#003FBC

Tritanopia (blue-blind)

#005774

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3729bf;
/* rgb */ color: rgb(55, 41, 191);
/* oklch */ color: oklch(41.8% 0.218 275.5);

Tailwind

colors: {
  custom: {
    50: '#8367d4',
    500: '#3729bf',
    950: '#000000',
  },
}

SCSS

$custom: #3729bf;
$custom-light: #8367d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3729bf",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 191
  },
  "hsl": {
    "h": 245.6,
    "s": 64.655,
    "l": 45.49
  },
  "oklch": {
    "l": 0.41766,
    "c": 0.21831,
    "h": 275.5
  },
  "luminance": 0.0616
}

Semantic roles & 50–950 ramp

primary

#3729BF

secondary

#C4CC78

accent

#E840D8

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0614

muted

#7D7A83

Preview Lab

Preview with #3729BF

Body copy rendered with the generated semantic roles for this colour.

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